<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear="getUserList"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getUserList"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>
      <!-- 用户列表区域 -->
      <el-table :data="uesrlist" border stripe>
        <!-- 索引列 -->
        <el-table-column type="index"></el-table-column>
        <!-- 其他列 -->
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <!-- 作用域插槽   slot-scope接受当前作用域的数据-->
          <template slot-scope="scope">
            <!-- 显示这一行的数据 -->
            <!-- {{ scope.row }} -->
            <el-switch
              v-model="scope.row.mg_state"
              @change="userStateChanged(scope.row)"
            ></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="210px">
          <template slot-scope="scope">
            <!-- {{ scope.row }} -->
            <!-- 修改按钮 -->
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
            <!-- 删除按钮 -->
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUesrById(scope.row.id)"></el-button>
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <!-- 分配角色按钮 -->
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>
    <!-- 添加用户的对话框 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
      <!-- 内容主体区域 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model.trim="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model.trim="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model.trim="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改用户的对话框 -->
    <el-dialog title="修改用户"
  :visible.sync="editDialogVisible" width="50%">
  <el-form :model="editForm" :rules="editFormRules" 
  ref="editFormRef" label-width="70px" @close="editDialogClosed">
    <el-form-item label="用户名">
      <el-input v-model="editForm.username" disabled></el-input>
    </el-form-item>
    <el-form-item label="邮箱" prop="email">
      <el-input v-model="editForm.email"></el-input>
    </el-form-item>
    <el-form-item label="手机" prop="mobile">
      <el-input v-model.trim="editForm.mobile"></el-input>
    </el-form-item>
  </el-form>
  <span slot="footer" class="dialog-footer">
    <el-button @click="editDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="editUserInfo">确 定</el-button>
  </span>
    </el-dialog>
    <!-- 分配角色对话框 -->
    <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
        <div>
            <p>当前的用户：{{userInfo.username}}</p>
            <p>当前的角色：{{userInfo.role_name}}</p>
            <p>分配新角色：
                <el-select v-model="selectedRoleId" placeholder="请选择">
                    <el-option
                      v-for="item in rolesList"
                      :key="item.id"
                      :label="item.roleName"
                      :value="item.id">
                    </el-option>
                  </el-select>
            </p>
        </div>
        <span slot="footer" class="dialog-footer">
         <el-button @click="setRoleDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
        </span>
</el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    // 自定义 验证邮箱的规则
    var checkEmail = (rule,value,cb) =>{
        // 验证邮箱的正则表达式
        const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/;
        if(regEmail.test(value))
        {
            // 合法的邮箱
            return cb();
        }
        cb(new Error('请输入合法的邮箱'));
    }
    // 自定义 验证手机号的规则
    var checkMobile = (rule,value,cb) =>{
        // 验证手机号的正则表达式
        const regMobile = /^(0|86|17951)?(13[0-9]|15[0123456789]|17[678]|18[0-9]|14[57])[0-9]{8}$/;
        if(regMobile.test(value))
        {
            return cb();
        }
        cb(new Error('请输入合法的手机号'))
    }
    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: "",
        // 当前页数
        pagenum: 1,
        // 当前每页显示多少条数据
        pagesize: 2,
      },
      uesrlist: [],
      total: 0,
      // 控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      // 控制分配权限对话框的显示与隐藏
      setRoleDialogVisible:false,
      // 添加用户的表单数据
      addForm: {
        username: "",
        password:'',
        email:'',
        mobile:'',
      },
      // 添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: "请输入用户名", trigger: "blur" },
          { min: 3, max: 10, message: "用户名的长度在3到10个字符之间", trigger: "blur" },
        ],
        password:[
            {required: true, message: "请输入密码", trigger: "blur" },
            { min: 6, max: 15, message: "密码的长度在6到15个字符之间", trigger: "blur" },
        ],
        email:[
            {required: true, message: "请输入邮箱", trigger: "blur" },
            {validator:checkEmail,trigger:'blur'}
        ],
        mobile:[
            {required: true, message: "请输入手机", trigger: "blur" },
            {validator:checkMobile,trigger:'blur'}
        ],
      },
    //   控制修改用户对话框的显示与隐藏
      editDialogVisible:false,
    //   修改时 查询到的用户对象
      editForm:{
      },
      // 修改表单的验证规则对象
      editFormRules:{
        email:[
            {required: true, message: "请输入邮箱", trigger: "blur" },
            {validator:checkEmail,trigger:'blur'}
        ],
        mobile:[
            {required: true, message: "请输入手机", trigger: "blur" },
            {validator:checkMobile,trigger:'blur'}
        ],
      },
    //   需要被分配角色的用户信息
      userInfo:{},
    //   所有角色的数据列表
      rolesList:{},
    //   已选中的角色id值
      selectedRoleId:'',
      
    }
  },
  created() {
    this.getUserList();
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get("users", { params: this.queryInfo });
      if (res.meta.status !== 200) return this.$message.error("获取用户列表失败！");
      this.uesrlist = res.data.users;
      this.total = res.data.total;
      console.log(res);
    },
    // 监听 pagesize 改变的事件
    handleSizeChange(newSize) {
      console.log(newSize);
      this.queryInfo.pagesize = newSize;
      this.getUserList();
    },
    // 监听页码值 改变的事件
    handleCurrentChange(newPage) {
      console.log(newPage);
      this.queryInfo.pagenum = newPage;
      this.getUserList();
    },
    // 监听 switch 开关状态的改变
    async userStateChanged(userInfo) {
      const { data: res } = await this.$http.put(`users/${userInfo.id}
            /state/${userInfo.mg_state}`);
      if (res.meta.status !== 200) {
        userInfo.mg_state = !userInfo.mg_state;
        return this.$message.error("更新用户状态失败！");
      }
      this.$message.success("更新用户状态成功");
    },
    // 监听添加用户对话框的关闭事件
    addDialogClosed(){
        // 重置
        this.$refs.addFormRef.resetFields();
    },
    // 点击确定按钮 添加新用户
    addUser(){
        this.$refs.addFormRef.validate(async valid =>{
            if(!valid) return ;
            // 可以发起添加用户的网络请求
            const {data:res} = await this.$http.post('users',this.addForm);
            if(res.meta.status !== 201)
            {
                return this.$message.error('添加用户失败！')
            }
            this.$message.success('添加用户成功！')
            // 关闭对话框
            this.addDialogVisible = false;
            // 重新获取用户列表
            this.getUserList();
        })
    },
    // 展示编辑用户的对话框
    async showEditDialog(id){
        const {data:res} = await this.$http.get('users/' + id)
        if(res.meta.status !== 200)
        {
            return this.$message.error('查询用户失败！');
        }
        this.editForm = res.data;
        this.editDialogVisible = true;
    },
    // 监听修改用户对话框的关闭事件
    editDialogClosed(){
        this.$refs.editFormRef.resetFields();
    },
    // 点击确定按钮 提交修改用户信息表单 
    editUserInfo(){
        // 提交前对信息进行预验证
        this.$refs.editFormRef.validate(async(valid)=>{
            if(!valid) return 
            // 发起修改用户信息的数据请求
            const {data:res} = await this.$http.put('users/' + this.editForm.id, {email:this.editForm.email,mobile:this.editForm.mobile});
            if(res.meta.status !== 200) {
                return this.$message.error('更新用户信息失败！');
            }
            this.editDialogVisible = false; 
            this.getUserList();
            this.$message.success('更新用户信息成功！');
        })
    },
    // 根据id删除对应的用户信息
    async removeUesrById(id){
        // 弹框询问用户是否删除
        const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err)

        // 如果用户确认删除，则返回值为字符串‘confirm’
        // 如果用取消删除，则返回值为字符串‘cancel’
        // console.log(confirmResult);
        if(confirmResult != 'confirm')
        {
            return this.$message.info('已取消删除')
        }
        const {data:res} = await this.$http.delete('users/' + id);
        if(res.meta.status !==200)
        {
            return this.$message.error('删除用户失败！');
        }
        this.$message.success('删除用户成功！');
        this.getUserList();
    },
    // 点击分配角色按钮 显示分配角色对话框 
    async setRole(userInfo){
        this.userInfo = userInfo;
        // 需要获取所有的角色列表
        const {data:res} = await this.$http.get('roles');
        if(res.meta.status !==200)
        {
            return this.$message.error('获取角色列表失败！');
        }
        this.rolesList = res.data;
        this.setRoleDialogVisible = true;
    },
    // 点击确定按钮 提交分配角色
    async saveRoleInfo(){
        if(!this.selectedRoleId){
            return this.$message.error('请选中要分配的角色！')
        }
        const {data:res} = await this.$http.put(`users/${this.userInfo.id}/role`,{rid:this.selectedRoleId});
        if(res.meta.status !==200)
        {
            return this.$message.error('更新角色失败！');
        }
        this.$message.success('更新角色成功！');
        this.getUserList();
        this.setRoleDialogVisible = false;
    },
    // 监听分配角色对话框的关闭事件
    setRoleDialogClosed(){
        this.selectedRoleId = '';
        this.userInfo = {};
    }
  },
};
</script>

<style></style>
